Backscatter Communication Triggering for Semi-Passive UE Energy Scheduling
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Solution Overview
Problem
Current wireless communication systems lack defined signaling for semi-passive user equipment (UE) to request energy transfer or communication resources, hindering efficient energy harvesting and data transmission.
Innovation Solution
Semi-passive UEs transmit a message indicating their class type to the network, which responds with a configuration for energy or communication scheduling requests, allowing the UE to request and receive energy or data transfer resources, facilitating energy harvesting and data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If semi-passive UEs transmit energy scheduling requests to request energy transfer resources, then energy harvesting efficiency is improved, but device complexity increases due to additional signaling requirements
Solution Approach 1:
The patent applies universality by designing scheduling request resources that serve dual purposes: they can indicate either energy scheduling requests or communication scheduling requests depending on the UE class. The network entity configures resources that are universally applicable to different UE types, reducing the need for separate dedicated signaling mechanisms for semi-passive UEs while maintaining improved energy harvesting efficiency through structured request transmission.
2Productivity
If semi-passive UEs implement energy scheduling request mechanisms, then energy resource utilization is optimized, but ease of operation deteriorates due to additional configuration management
Solution Approach 1:
The patent implements self-service by enabling semi-passive UEs to autonomously determine when to transmit energy scheduling requests based on their energy buffer status and harvesting conditions. The UE independently monitors its energy state and triggers requests without requiring continuous network intervention or complex configuration management, thereby optimizing energy resource utilization while simplifying operational procedures.
3Reliability
If the network entity provides dedicated resources for energy scheduling requests, then reliability of energy transfer is improved, but loss of information increases due to additional control signaling
Solution Approach 1:
The patent applies merging by combining energy scheduling request resources with communication scheduling request resources into a unified signaling framework. Instead of creating entirely separate dedicated resources for energy requests, the system merges both request types into shared resources with class-based differentiation, thereby improving energy transfer reliability through structured resource allocation while reducing control signaling overhead by eliminating redundant separate signaling channels.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. Described techniques provide for signaling for configuring energy scheduling requests or communications scheduling requests from a semi-passive user equipment (UE) to the network. A semi-passive UE may transmit a message indicating a UE class type to a serving network entity (e.g., indicating that the UE is a semi-passive UE). The network entity may transmit control signaling indicating a configuration for the UE to transmit energy scheduling requests or communications scheduling requests. The UE may transmit an energy scheduling request or communications scheduling request in accordance with the configuration. In response to an energy scheduling request, the network entity may indicate a resource for an energy transfer signal, and the UE may monitor for and receive an energy transfer signal in the indicated resource. In response to a communications scheduling request, the network entity may indicate a resource for a data transmission.